Features

The FRIDB realizes an experimental platform for RFID (13.56 MHz). It consists of an Antenna, a ST Micro M24LR64 RFID-Tag Chip with 64kbit EEPROM and I2C port and a Texas Instruments TRF7960 RFID reader chip with SPI interface.

So you can make the Freerunner either a RFID tag (e.g. to open doors) or a RFID reader (to read/write standard tags e.g. in credit card format).

The FRIDB can also connected to other Microcontrollers and SoC (e.g BeagleBoard) since it has splitted I/O and power supply.

The board comes with three parts that can/must be separated:

Antenna

The antenna is a printed loop designed for a typical center frequency of 13 MHz with a capacitor of 56pF.

It can be fixed by tape instead of the battery cover or mounted externaly.

RFID-Tag

By connecting the I2C EEPROM (ST Micro M24LR64) to the antenna and to the main CPU by I2C, the unit can be used as a dual-port RFID Tag. I.e. the tag can either be read or written through RFID (even if the main device has no power) or through the CPU. A typical scenario could be to personalize the device or to receive online-purchased tickets and store them in the tag so that they can be read out through RFID - even if the battery of the device is down.

The Tag module fits into the area above the SIM/SD card reader of the Openmoko Freerunner.
It is up to you to wire the board to the Freerunner main board in a way that you can still swap SD cards and/or SIM cards.

The tag is compatible to readers that support:

ISO 15693

ISO 18000-3 mode 1

RFID-Reader

By connecting the Reader through the SPI interface (TI TRF7960) it is possible to use the Freerunner as a RFID reader.

The Reader module fits into the area above the SIM/SD card reader of the Openmoko Freerunner.
It is up to you to wire the board to the Freerunner main board in a way that you can still swap SD cards and/or SIM cards.

The Reader chip supports these standards:

ISO 14443A (Mifare)

ISO 14443B

ISO 15693

ISO 18000-3

both

Note: you can't use reader and tag in parallel. At least we have not tried. The protocols should be able to handle this case since there is a collision detection mechanism to separate multiple tags. What is not known is how to connect both devices to a single antenna. Maybe through a high-ohm resistor (to attenuate the TX signal from the RFID reader and two capacitors (to separate the DC components).

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Features

The FRIDB realizes an experimental platform for RFID (13.56 MHz). It consists of an Antenna, a ST Micro M24LR64 RFID-Tag Chip with 64kbit EEPROM and I2C port and a Texas Instruments TRF7960 RFID reader chip with SPI interface.

So you can make the Freerunner either a RFID tag (e.g. to open doors) or a RFID reader (to read/write standard tags e.g. in credit card format).

The FRIDB can also connected to other Microcontrollers and SoC (e.g BeagleBoard) since it has splitted I/O and power supply.

The board comes with three parts that can/must be separated:

Antenna

The antenna is a printed loop designed for a typical center frequency of 13 MHz with a capacitor of 56pF.

It can be fixed by tape instead of the battery cover or mounted externaly.

RFID-Tag

By connecting the I2C EEPROM (ST Micro M24LR64) to the antenna and to the main CPU by I2C, the unit can be used as a dual-port RFID Tag. I.e. the tag can either be read or written through RFID (even if the main device has no power) or through the CPU. A typical scenario could be to personalize the device or to receive online-purchased tickets and store them in the tag so that they can be read out through RFID - even if the battery of the device is down.

The Tag module fits into the area above the SIM/SD card reader of the Openmoko Freerunner.
It is up to you to wire the board to the Freerunner main board in a way that you can still swap SD cards and/or SIM cards.

The tag is compatible to readers that support:

ISO 15693

ISO 18000-3 mode 1

RFID-Reader

By connecting the Reader through the SPI interface (TI TRF7960) it is possible to use the Freerunner as a RFID reader.

The Reader module fits into the area above the SIM/SD card reader of the Openmoko Freerunner.
It is up to you to wire the board to the Freerunner main board in a way that you can still swap SD cards and/or SIM cards.

The Reader chip supports these standards:

ISO 14443A (Mifare)

ISO 14443B

ISO 15693

ISO 18000-3

both

Note: you can't use reader and tag in parallel. At least we have not tried. The protocols should be able to handle this case since there is a collision detection mechanism to separate multiple tags. What is not known is how to connect both devices to a single antenna. Maybe through a high-ohm resistor (to attenuate the TX signal from the RFID reader and two capacitors (to separate the DC components).